LG Electronics 29FX6ALX-ZG service manual No Picture/ No Sound, Sda

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4) No Picture/ No Sound

Is any OSD displayed?

NO

OK

Check IC501 pin 83, 84, 85 (R, G, B out)

Check receiving system in MENU & execute Auto - Program

OK

NO

Check the waveform pin73(H-out)

OK

NO

Check IC501 pin 83, 84, 85 (R, G, B out)

OK

Check pin3 Reset

Voltage

OK

Check pin8, 12 SCL,

SDA

OK

Replace IC501

Does the auto - Program operate properly

OK

Store on manual -program MENU

NO

Check SMPS Trans

Secondary Voltage

NO

Check IC12(EEPROM)

& SCL, SDA, Line

Go to No sound/ picture OK

P13A (R, G, B out of IC501)

P13A (R, G, B out of IC501)

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Contents Model 29FX6ALX Contents Description of Controls Favourite Front panel Side panel NTSC-M PAL,SECAM BGPAL/SECAM DK PAL-I/I Ntsc M SECAM-L/L’ Option Ntsc M/ PAL M/NCPT Heat RUN Focus adjustmentPurity & Convergence adjustment Application ObjectScreen voltage adjustment White balance adjustmentDeflection setting Data Adjustment Deflection setting initial data Service adjustment data table OSD & Text Languages Option Adjustment Level Part no Specification DescriptionMain Chassis Assy Uociii Trouble ShootingOpen No Raster 2/2SDA No Picture/ No SoundAV STEREO/ Mono Model Printed Circuit Board POWERSIDE-A/V Control Smps LED Harmonic Block Diagram Exploded View Exploded View Parts List Replacement Parts List Description Coil & Inductor Resistor 0RMZVBK002D Switch No 38549D0024A May